PowerColor ATI Radeon HD6850 1 GB DDR5 DVI/HDMI/2x Mini DisplayPort PCI-Express Video Card AX6850 1GBD5-I2DH Max. Resolution: 2560 x 1600 Memory Clock: 1000 MHz x 4 (4.0 Gbps) Engine Clock: 775 MHz Chipset: Radeon HD6850 Video Memory: 1GB DDR5 Chipset: Radeon HD6850 Engine Clock: 775 MHz Video Memory: 1GB DDR5 Memory Clock: 1000 MHz x 4 (4.0 Gbps) Max. Resolution: 2560 x 1600 Support Microsoft Windows 7/ Vista/ XP Support HDCP - High-bandwidth Digital Content Protection